Would it be worth leveling up Tailoring, Jewelcrafting and Mining 5 times on 2 set of chars?

The benefits over 4 days would be

20 dragon;s eye
20 titansteel CD
20 Icy Prisms CD
5 Ebonweave
Moonshroud
Spellweave (plus 5 more free spellweave due to specialization)

I;m just wondering if you think it would be worth it in the long run training up all these proffesions, if I bought straight off the AH to craft.